Differential speed twin screw extruder for regrind compounding

Abstract

The utility model relates to extrusion equipment technical field, concretely is the differential speed double screw extruder of reground material mixing, including setting up the double screw extruder main part of spiral conveying mechanism, spiral conveying mechanism is connected with the feed pipe, the rear side of double screw extruder main part is provided with track assembly, a plurality of storage hoppers are provided on track assembly, the outer periphery of feed pipe is sleeved with the connecting sleeve pipe, track assembly includes outer ring rail and inner ring rail, the outer fixed of storage hopper has outer end plate, a plurality of gyro wheels are installed in the outer end plate bottom, and control assembly is provided outside the discharge pipe. The differential speed double screw extruder of reground material mixing, through setting up track assembly in the rear side of double screw extruder main part and moving setting up multiple storage hoppers on track assembly, different storage hoppers can store different materials, when needing to change material in the production process, just need to move storage hopper on track assembly, make corresponding storage hopper and feed pipe aligning can realize changing material, need not to empty the original storage material.

Description

Technical Field

[0001] This utility model relates to the field of extrusion equipment technology, specifically to a differential twin-screw extruder for compounding recycled materials. Background Technology

[0002] In the production of plastic crates, substandard waste products are generated. These waste products can be crushed and then processed into recycled plastics using a differential twin-screw extruder. The differential rotation of the two screws generates shearing force, which melts and mixes the recycled material, improving the plasticization effect and enhancing the utilization value of the recycled material.

[0003] Utility model patent CN222921026U discloses a twin-screw extruder for PE plastic bottle production. This twin-screw extruder includes a base, on which a twin-screw extruder is fixedly mounted. An extruder feed hopper is fixedly connected to the twin-screw extruder. The feeding mechanism includes a connecting housing, and an installation plate is fixedly connected inside the extruder feed hopper. A rotating shaft is rotatably connected inside the installation plate, and a sealing plate is fixedly connected to the surface of the rotating shaft. Two through slots are formed on the surface of the installation plate, and multiple fan blades are fixedly connected to the surface of the rotating shaft. The rotation of the sealing plate and fan blades allows for adjustment of the sealing condition of the through slots, facilitating the adjustment of the plastic granule feeding speed, ensuring stable feeding of plastic granules, preventing plastic granules from clogging inside the extruder feed hopper, thus affecting the processing of plastic granules by the twin-screw extruder and improving the production quality of PE plastic bottles.

[0004] The twin-screw extruder used for PE plastic bottle production can only hold a single material in its feed hopper. If frequent material changes are required during production, all the existing material must be discharged before adding new material, which is cumbersome, time-consuming, and affects production continuity. Therefore, we propose a differential speed twin-screw extruder for recycled material compounding. Utility Model Content

[0005] The purpose of this invention is to provide a differential twin-screw extruder for compounding recycled materials, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A differential twin-screw extruder for compounding recycled materials includes a twin-screw extruder body, a screw conveyor mechanism at the feed end of the rear side of the twin-screw extruder body, a vertical feed pipe connected to the feed end of the screw conveyor mechanism, a track assembly at the rear side of the twin-screw extruder body, a plurality of storage hoppers on the track assembly, the storage hoppers being movable on the track assembly, and different storage hoppers being aligned with the feed pipe by moving the storage hoppers on the track assembly;

[0008] A connecting sleeve is fitted around the periphery of the feed pipe;

[0009] The track assembly includes an outer ring track and an inner ring track, and the storage hopper is placed between the outer ring track and the inner ring track;

[0010] An outer end plate is fixed to the outer surface of the storage hopper. Rollers are installed at the four corners of the bottom of the outer end plate. The storage hopper rests on the track assembly via the rollers. The bottom of the storage hopper is conical and has a discharge pipe. A control component for controlling the opening and closing of the bottom of the storage hopper is provided on the outside of the discharge pipe.

[0011] Preferably, a shank bolt is provided at the bottom of the outer side of the connecting sleeve. The shank bolt has a handle at the front end and a threaded rod at the back end. The threaded rod of the shank bolt is threadedly connected to the connecting sleeve and abuts against the feed pipe.

[0012] In this setup, the connecting sleeve can be fixed at different heights on the feed pipe by tightening or loosening the shank bolt, making it easy to control the fit between the connecting sleeve and the discharge pipe.

[0013] Preferably, the bottom of the outer ring rail and the inner ring rail are provided with a plurality of support rods, and the outer ring rail and the inner ring rail are located on the same horizontal plane;

[0014] In this setup, the support rods can keep the outer and inner ring rails horizontal, ensuring that the storage hopper moves smoothly on the track and preventing material conveying from being obstructed due to track tilt.

[0015] Preferably, the outer ring rail has an upwardly protruding outer edge at the outer peripheral edge of the top surface, and the inner ring rail has an upwardly protruding inner edge at the inner peripheral edge of the top surface, and the storage hopper is constrained on the track assembly between the outer edge and the inner edge.

[0016] In this setting, the outer and inner retaining flanges can limit the movement range of the storage hopper, preventing it from derailing during movement and ensuring the safety of equipment operation.

[0017] Preferably, the rollers near the center of the track assembly rest on the top of the inner ring rail and can roll along the inner ring rail, while the rollers away from the center of the track assembly rest on the top of the outer ring rail and can roll along the outer ring rail.

[0018] In this configuration, the storage hopper contacts the inner and outer ring rails via rollers, which reduces friction during movement and makes the hopper move more smoothly and flexibly on the rails.

[0019] Preferably, the control component includes a circular blocking plate located inside the storage hopper, a retaining ring sleeved on the outside of the discharge pipe, and a plurality of connecting rods fixed between the blocking plate and the retaining ring, wherein the connecting rods pass through the bottom of the storage hopper and are slidably connected to the storage hopper;

[0020] In this setup, the blocking plate and the abutment ring are connected as a whole by a connecting rod. When the abutment ring is subjected to external force, it can drive the blocking plate to move synchronously, thereby controlling the opening and closing of the bottom of the storage hopper.

[0021] Preferably, when no external force is applied, the outer edge of the blocking plate abuts against the conical inner wall of the bottom of the storage hopper under the action of its own weight and the weight of the material stored inside the storage hopper, thereby sealing the bottom of the storage hopper.

[0022] This setup utilizes the blocking plate and the gravity of the material to automatically seal the bottom of the storage hopper, preventing materials from accidentally falling out when not in operation and ensuring the stability of material storage and transportation.

[0023] Preferably, when the discharge pipe is aligned with the feed pipe, the connecting sleeve is pushed upward to lift the control component and place it on the outside of the discharge pipe. At this time, the blocking plate moves upward away from the conical inner wall of the storage hopper, so that the bottom of the storage hopper is open and the material in the storage hopper falls into the feed pipe through the discharge pipe.

[0024] In this setup, the bottom of the storage hopper can be easily opened by pushing the connecting sleeve upwards to lift the control component, allowing the material to fall smoothly into the feed pipe, thus achieving precise material conveying and material changing operations.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] This differential twin-screw extruder for recycled material compounding uses a track assembly at the rear of the twin-screw extruder body, on which multiple storage hoppers are moved and positioned. Different hoppers can store different materials. When material needs to be changed during production, the storage hoppers can be moved on the track assembly to align with the feed pipe, eliminating the need to empty the original storage material. This simplifies the material change process, shortens the material change time, and improves production continuity and efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the main body of the twin-screw extruder in this utility model;

[0029] Figure 3This is a schematic diagram of the connecting sleeve in this utility model;

[0030] Figure 4 This is a schematic diagram of the track assembly in this utility model;

[0031] Figure 5 This is a schematic diagram of the bottom structure of the storage hopper in this utility model;

[0032] Figure 6 This is a cross-sectional view of the storage hopper in this utility model;

[0033] Figure 7 This is a schematic diagram of the control component in this utility model;

[0034] The meanings of the labels in the diagram are as follows:

[0035] 100. Twin-screw extruder body; 110. Screw conveyor mechanism; 111. Feed pipe; 120. Connecting sleeve; 121. Handle bolt;

[0036] 200. Track assembly; 210. Outer ring rail; 211. Outer retaining flange; 220. Inner ring rail; 221. Inner retaining flange; 230. Support rod;

[0037] 300. Storage hopper; 310. Outer end plate; 311. Roller; 320. Discharge pipe; 330. Control component; 331. Blocking plate; 332. Abutment ring; 333. Connecting rod. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Please see Figures 1-7A differential-speed twin-screw extruder for recycled material compounding includes a twin-screw extruder body 100, which serves as the core processing component, providing a space for material compounding. A screw conveyor mechanism 110 is located at the feed end of the rear side of the twin-screw extruder body 100. The screw conveyor mechanism 110 stably conveys materials into the twin-screw extruder body 100, ensuring continuous feeding. A vertical feed pipe 111 is connected to the feed end of the screw conveyor mechanism 110, providing a channel for materials to enter the screw conveyor mechanism 110. A track assembly 200 is located at the rear side of the twin-screw extruder body 100, with several storage hoppers 300 mounted on the track assembly 200. The storage hoppers 300 can move on the track assembly 200, which provides track support for their movement. The multiple storage hoppers 300 can store different types of materials, meeting the compounding needs of various materials. By moving the storage hopper 300 on the track assembly 200, different storage hoppers 300 can be aligned with the feed pipe 111.

[0040] like Figure 2 and Figure 3 As shown, in this utility model, a connecting sleeve 120 is sleeved around the feed pipe 111. A shank bolt 121 is provided at the bottom of the outer side of the connecting sleeve 120. The first end of the shank bolt 121 is a handle, and the end is a threaded rod. The threaded rod part of the shank bolt 121 is threadedly connected to the connecting sleeve 120 and abuts against the feed pipe 111. By loosening the shank bolt 121, the connecting sleeve 120 can move along the feed pipe 111, thereby adjusting the position of the connecting sleeve 120 on the feed pipe 111. By tightening the shank bolt 121, the connecting sleeve 120 can be fixed on the feed pipe 111, ensuring that the relative position of the connecting sleeve 120 and the feed pipe 111 is stable.

[0041] like Figure 1 and Figure 4 As shown, specifically, the track assembly 200 includes an outer ring rail 210 and an inner ring rail 220. The storage hopper 300 is positioned between the outer ring rail 210 and the inner ring rail 220, which together form the track for the movement of the storage hopper 300. Several support rods 230 are provided at the bottom of the outer ring rail 210 and the inner ring rail 220, which support the outer ring rail 210 and the inner ring rail 220, ensuring the stability of the track assembly 200. The outer ring rail 210 and the inner ring rail 220 are located on the same horizontal plane, ensuring that the storage hopper 300 will not tilt during movement. The outer ring rail 210 has an upwardly protruding outer edge 211 at the outer peripheral edge of the top surface, and the inner ring rail 220 has an upwardly protruding inner edge 221 at the inner peripheral edge of the top surface. The storage hopper 300 is restricted on the track assembly 200 between the outer edge 211 and the inner edge 221 to prevent the storage hopper 300 from leaving the track.

[0042] like Figure 5 and Figure 6 As shown, further, an outer end plate 310 is fixed on the outer surface of the storage hopper 300. Rollers 311 are installed at the four corners of the bottom of the outer end plate 310. The storage hopper 300 rests on the track assembly 200 through the rollers 311. The rollers 311 can reduce the friction between the storage hopper 300 and the track assembly 200, making the storage hopper 300 move more easily. The rollers 311 near the center of the track assembly 200 rest on the top of the inner ring rail 220 and can roll along the inner ring rail 220. The rollers 311 away from the center of the track assembly 200 rest on the top of the outer ring rail 210 and can roll along the outer ring rail 210. Under the action of the rollers 311, the storage hopper 300 moves smoothly on the track assembly 200.

[0043] like Figures 5-7 As shown, the bottom of the storage hopper 300 is conical and equipped with a discharge pipe 320. The conical design facilitates the concentrated discharge of materials, and the discharge pipe 320 provides a channel for material discharge. A control component 330 for controlling the opening and closing of the bottom of the storage hopper 300 is provided on the outside of the discharge pipe 320. The control component 330 includes a circular blocking plate 331 located inside the storage hopper 300, a retaining ring 332 sleeved on the outside of the discharge pipe 320, and several connecting rods 333 fixed between the blocking plate 331 and the retaining ring 332. The connecting rods 333 pass through the bottom of the storage hopper 300 and are slidably connected to the storage hopper 300, so that the control component 330 can move up and down at the bottom of the storage hopper 300 under the action of the connecting rods 333.

[0044] It is worth noting that, when no external force is applied, the outer edge of the blocking plate 331 abuts against the conical inner wall of the bottom of the storage hopper 300 under the combined weight of its own weight and the weight of the material stored inside the storage hopper 300, thus sealing the bottom of the storage hopper 300 and preventing material from falling out when it is not needed. When the discharge pipe 320 is aligned with the feed pipe 111, the connecting sleeve 120 is pushed upwards to lift the control component 330 and place it on the outside of the discharge pipe 320. At this time, the blocking plate 331 moves upwards away from the conical inner wall of the storage hopper 300, opening the bottom of the storage hopper 300. The material in the storage hopper 300 falls into the feed pipe 111 through the discharge pipe 320, allowing the material to enter the twin-screw extruder body 100 through the screw conveyor mechanism 110.

[0045] It is worth noting that the screw conveyor mechanism 110 involved in this utility model is a conventional technology. Its working principle is that the screw shaft is driven to rotate by a motor. During the rotation of the screw shaft, the screw blades on the screw shaft generate an axial thrust on the incoming material, so that the material is pushed outward along the conveying pipe of the screw conveyor mechanism by the screw blades. This will not be described in detail in this utility model.

[0046] In this embodiment of the differential twin-screw extruder for recycled material compounding, the process is as follows: First, according to production needs, different types of materials are loaded into multiple storage hoppers 300. Then, by pushing the storage hoppers 300, the discharge pipe 320 at the bottom of the storage hoppers 300 is aligned with the feed pipe 111. Next, the connecting sleeve 120 is pushed upwards, so that the connecting sleeve 120 is fitted onto the outside of the discharge pipe 320. After pushing the control component 330 upwards, the handle bolt 121 is tightened to fix the position of the connecting sleeve 120. At this time, the bottom of the storage hoppers 300 is opened. The material is discharged through the discharge pipe 320 into the feed pipe 111, and then conveyed by the screw conveyor 110 to the twin-screw extruder body 100 for mixing. Finally, when it is necessary to change the material, the connecting sleeve 120 is reset, so that the blocking plate 331 closes the bottom of the storage hopper 300 under its own weight and the weight of the material stored inside the storage hopper 300. At this time, another storage hopper 300 can be pushed to align with the feed pipe 111. By repeating the above operation, the continuous processing of different materials can be achieved without removing the unmixed material.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A differential speed twin-screw extruder for compounding recycled materials, comprising a twin-screw extruder body (100), wherein a screw conveying mechanism (110) is provided at the feed end position on the rear side of the twin-screw extruder body (100), characterized in that: The screw conveyor (110) is connected to a vertical feed pipe (111) at the feed end. A track assembly (200) is provided at the rear side of the twin-screw extruder body (100). A plurality of storage hoppers (300) are provided on the track assembly (200). The storage hoppers (300) can move on the track assembly (200). By moving the storage hoppers (300) on the track assembly (200), different storage hoppers (300) can be aligned with the feed pipe (111). A connecting sleeve (120) is fitted around the feed pipe (111). The track assembly (200) includes an outer ring rail (210) and an inner ring rail (220), and the storage hopper (300) is positioned between the outer ring rail (210) and the inner ring rail (220); An outer end plate (310) is fixed on the outer surface of the storage hopper (300). Rollers (311) are installed at the four corners of the bottom of the outer end plate (310). The storage hopper (300) rests on the track assembly (200) through the rollers (311). The bottom end of the storage hopper (300) is conical and is provided with a discharge pipe (320). A control component (330) for controlling the opening and closing of the bottom of the storage hopper (300) is provided on the outside of the discharge pipe (320).

2. The differential speed twin-screw extruder for recycled material compounding according to claim 1, characterized in that: A shank bolt (121) is provided at the bottom of the outer side of the connecting sleeve (120). The shank bolt (121) has a handle at the front end and a threaded rod at the back end. The threaded rod part of the shank bolt (121) is threadedly connected to the connecting sleeve (120) and abuts against the feed pipe (111).

3. The differential speed twin-screw extruder for recycled material compounding according to claim 1, characterized in that: The bottom of the outer ring rail (210) and the inner ring rail (220) are provided with several support rods (230), and the outer ring rail (210) and the inner ring rail (220) are located on the same horizontal plane.

4. The differential speed twin-screw extruder for recycled material compounding according to claim 1, characterized in that: The outer ring rail (210) has an upwardly protruding outer edge (211) at the outer peripheral edge of the top surface, and the inner ring rail (220) has an upwardly protruding inner edge (221) at the inner peripheral edge of the top surface. The storage hopper (300) is restricted on the track assembly (200) between the outer edge (211) and the inner edge (221).

5. The differential speed twin-screw extruder for recycled material compounding according to claim 1, characterized in that: The roller (311) located near the center of the track assembly (200) rests on the top of the inner ring rail (220) and can roll along the inner ring rail (220), while the roller (311) located away from the center of the track assembly (200) rests on the top of the outer ring rail (210) and can roll along the outer ring rail (210).

6. The differential speed twin-screw extruder for recycled material compounding according to claim 1, characterized in that: The control component (330) includes a circular blocking plate (331) located inside the storage hopper (300), an abutment ring (332) sleeved on the outside of the discharge pipe (320), and a plurality of connecting rods (333) fixed between the blocking plate (331) and the abutment ring (332). The connecting rods (333) pass through the bottom of the storage hopper (300) and are slidably connected to the storage hopper (300).

7. The differential speed twin-screw extruder for recycled material compounding according to claim 6, characterized in that: When no external force is applied, the outer edge of the blocking plate (331) abuts against the conical inner wall of the bottom of the storage hopper (300) under the action of its own weight and the weight of the material stored inside the storage hopper (300), thereby sealing the bottom of the storage hopper (300).

8. The differential speed twin-screw extruder for recycled material compounding according to claim 6, characterized in that: When the discharge pipe (320) is aligned with the feed pipe (111), the connecting sleeve (120) is pushed upwards so that the connecting sleeve (120) lifts the control component (330) and fits it on the outside of the discharge pipe (320). At this time, the blocking plate (331) moves upwards away from the conical inner wall of the storage hopper (300), so that the bottom of the storage hopper (300) is open and the material in the storage hopper (300) falls into the feed pipe (111) through the discharge pipe (320).

Images